Microprogrammed Control Q.16

0. Consider the instruction set architecture of a general-purpose machine. Suppose that a total of 20 control signals are present, out of which 7 are mutually exclusive while the rest are not. The number of bits required in the control word (for microprogramming) will beat least .................... .

Answer
Comment
Array

Option : A
Explanation : The 7 mutually exclusive signals can be encoded in ceiling(log₂ 7) = 3 bits,
while the remaining 13 signals will remain un-encoded. So the number of
bits in a control word will be 3 + 13 = 16.

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